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标题: 美国化学奥赛(USNCO)考题及解答 [打印本页]
作者: 胡老师    时间: 2022-1-12 20:27
标题: 美国化学奥赛(USNCO)考题及解答
Exam Organization
Multiple choice USNCO (both local and national) exams cover the following topics:

Questions   
Topic
1 – 6 Stoichiometry/Solutions
7 – 12 Descriptive/Laboratory
13 – 18 States of Matter
19 – 24 Thermodynamics
25 – 30 Kinetics
31 – 36 Equilibrium
37 – 42 Oxidation - Reduction
43 – 48 Atomic Structure/Periodicity
49 – 54 Bonding/Molecular Structure
55 – 60 Organic/Biochemistry
Local Chemistry Olympiad Exams
Nearly 16,000 U.S. students participate in Local Chemistry Olympiad competitions. Over 70% of Local Sections use the Local Section Exam prepared by the ACS Chemistry Olympiad Examination Task Force. Exams are administered annually in March and students are nominated for the U.S. National Chemistry Olympiad competition based on their performance and eligibility.

National Chemistry Olympiad Exams
The U.S. National Chemistry Olympiad National Exam is a 3-part, 4 hour and 45 minute exam administered in mid or late April by ACS Local Sections and International Chapters. Roughly 1,000 students participate in this exam each year. Students must be nominated by their coordinator to participate, and only a limited number of nominees are accepted per Local Section or International Chemical Sciences Chapter. Eligibility rules apply.


Part IPart IIPart III
  • Multiple Choice
  • 90-minutes
  • 60 multiple choice questions
  • Covers broad chemistry topics
  • Problem Solving
  • 105 minutes
  • 8 written questions
  • Covers chemical theories and models
  • Lab Practical
  • 90 minutes
  • 2 laboratory practicals
  • Involves problem solving in the laboratory

Past Local Chemistry Olympiad Exams
Local Exams (2000-2023)

Past National Chemistry Olympiad Exams
National Exams (1999-2023)
Answer key included
2023IIIIII
2022I | SolutionsIIIII
2021I | SolutionsIIIII (Omitted)
2021
2020
2019
2018
2017
2016
2015
2014
20132012201120102009
20082007200620052004
20032002200120001999






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